探索与冲刺游泳表现和性别差异的负载速度概况
JesúsJ Ruiz-Navarro1, Dennis-Peter Born2,2,2, Adrián Febles-Castro1
1Aquatics Lab, Department of Physical Education and Sports, Faculty of Sport Sciences, University of Granada, Granada, Spain.
International journal of sports medicine
|April 11, 2025
概括
负载速度概况准确地预测了男性和女性游泳者的冲刺游泳表现. 虽然动力学与游泳相关,但随着抵抗力的增加,这种联系会减弱,男性通常表现出比女性更高的性能指标.
科学领域:
- 运动科学 运动科学 运动科学
- 生物力学 生物力学
- 运动生理学 运动生理学
背景情况:
- 负载速度概况 (LVP) 是一种用于评估强度和功率的工具.
- 了解LVP与游泳表现和运动学的关系对于训练优化至关重要.
- 基于性别的生理反应和表现的差异可能会影响游泳者的LVP应用.
研究的目的:
- 调查LVP与冲刺游泳表现和动力学之间的关系.
- 探索LVP变量,血液乳酸盐 ([La-) 和干地强度 (拉动) 之间的相互关系.
- 检查这些关系中的基于性别的差异.
主要方法:
- 27名游泳者 (15名男性,12名女性) 完成了50米前部爬行游泳测试,LVP测试和拉力测试.
- 用不同负载的半挂试验来评估LVP.
- 测量了冲刺游泳表现,动力学,干地强度和血液中乳酸盐度.
主要成果:
- 来自LVP的理论最大速度与两性冲刺游泳表现有很强的相关性 (r>0.863,p<0.001).
- 随着负载的增加,LVP和自由游泳之间的动力学关联下降 (r从0.929到0.403).
- 女性在[La-]和LVP变量 (r>0.573,p<0.05) 之间表现出关联,而男性在大多数评估变量中表现出更高的值 (p<0.05),除了中风率和[La-].
结论:
- LVP是评估男性和女性游泳者的冲刺游泳表现的宝贵工具.
- 半绑定和自由游泳之间的动力学参数是相关的,但随着负载的增加,这种关联会减少.
- 存在基于性别的差异,男性通常表现出优越的力量和力量指标.
相关概念视频
Cardiac Output II: Effect of Stroke Volume on Cardiac Output
532
Cardiac output (CO), the amount of blood the heart pumps per minute, is a parameter in cardiovascular physiology determined by stroke volume and heart rate. Stroke volume, the amount of blood pushed from one of the ventricles per heartbeat, is influenced by preload, afterload, and contractility.
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
Preload
Preload refers to the initial elongation of the cardiac myocytes before contraction and is related to the volume of blood filling the heart at the end of diastole, or end-diastolic volume. The...
532
Exercise and Muscle Performance
1.3K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.3K
Design Example: Designing Water Slide
72
When designing a water slide, controlling the speed of water flow is crucial for rider safety while maintaining an exciting experience. As water flows down the slide, gravity causes it to accelerate, with its speed at the bottom depending on the height from which it starts. The higher the slide, the more potential energy the water has at the top, which is converted into kinetic energy as it descends, increasing its speed.
Bernoulli's principle determines the water's velocity along the...
Bernoulli's principle determines the water's velocity along the...
72
Relative Motion Analysis - Velocity
332
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
332
Regulation of Stroke Volume
2.9K
The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling...
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling...
2.9K
Cohesion
50.3K
Cohesion is the attraction between molecules of the same type, such as water molecules. Water molecules have an overall neutral charge but are polar molecule. An oxygen atom in one water molecule has a partial negative charge that can bind to a hydrogen atom with a partial positive charge in a second water molecule, forming a hydrogen bond. Each water molecule can form up to four hydrogen bonds with other water molecules. Hydrogen bonds are responsible for water's cohesive nature.
On a...
On a...
50.3K


